期刊论文

Adsorption Characteristics of Omethoate in Water Using MWNTs and MWNTs/TiO_2

中文

中国给水排水

1000-4602

2017

33

11

82-85,90

10.19853/j.zgjsps.1000-4602.2017.11.017

湖南省自然科学基金资助项目（2015JJ2022） 湖南省教育厅科学研究重点项目（11A022） 湖南省产学研合作示范基地建设项目 湖南省高校科研成果产业化培育项目（15CY002）

本校为第一机构

通过平衡试验分析了多壁碳纳米管(MWNTs)及MWNTs/TiO_2复合材料对氧乐果的吸附行为,探讨了两种材料的吸附热力学与动力学特性。结果表明,pH值对两种材料吸附性能的影响不大,在相同条件下,MWNTs和MWNTs/TiO_2对水中氧乐果的吸附量随初始浓度的增加而增大,对100 mg/L氧乐果溶液的最大吸附量分别为74.9和5.4 mg/g。两种材料的吸附过程均符合假二级动力学模型,且MWNTs/TiO_2对氧乐果的吸附速率为0.012 7 g/(mg. min),约为MWNTs的10倍,说明MWNTs/TiO_2具备更强的吸附能力。两种材料的吸附等温线均可用Freundlich等温吸附模型描述。

The adsorption characteristics of multi-walled carbon nanotubes (MWNTs) and MWNTs/TiO_2 on omethoate were comparatively tested in batch experiments. The results showed that the pH value had limited impact on the adsorption kinetics of either material. Under the same test conditions, the adsorption capacity on omethoate of MWNTs and MWNTs/TiO_2 increased with the increase of initial concentrations. The maximum adsorption capacity on 100 mg/L omethoate was 74.9 mg/g and 5.4 mg/ g, respectively. The adsorption kinetic of the two adsorbents was bot...